| Phone: | (925) 625-3798 |
| Fax: | (925) 625-0814 |
| Mail: | P.O. Box 127 |
| Oakley, CA 94561-0127 |
To help our customers better understand their water bills, here is information on how we set water rates and how we determine charges, in addition to how to read your water meter and other useful information about your bills.

Diablo Water District is a Not-for-Profit Public Agency that is run by local elected officials to deliver a reliable supply of high quality drinking water to the people of Oakley. All revenues received by the District are used solely for the water system. The last water rate increase was in 1999.
Basic Charge
The basic water bill consists of a Water Charge based on the amount of water you use,
plus a Service Charge to pay the fixed costs of the water system.
Water Charge : $2.48 per 100 cubic feet (748 gallons)
Monthly Service Charge :
5/8-inch meter = $8.95 (typical home)
1-inch meter = $22.10
1½-inch meter = $44.10
OTHER CHARGES :
Check Valve Charge : Monthly charge based on the size of the device being checked:
½ to 2 inch = $2.30
2½ inch = $2.60
Late Charge : 5% of balance not paid by delinquent date.
Trip Charge : $20 per trip to notify customer of disconnection, or disconnect service for non-payment,
or to reinstate service.
Return Check Charge : $20 per unpaid check returned from bank.
Call Out Charge : $100 to connect or disconnect water service after 4 p.m. and on weekends.
Tampering With Locked Service : $150 plus damages.
Security Deposit : $100 or twice the estimated monthly bill, which will be credited to a customer’s
account after 12 months with not more than 1 past due notice.
You are billed for full units only. When reading your meter to calculate billing amounts, only use the first four digits from the left. This applies to either our 6 digit or 8 digit meters.
| Click on thumbnails to view larger image: | |
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| 6 Digit Meter | 8 Digit Meter |
If you perform the following steps, you will learn how much water you are actually using for outdoor summer watering of landscaping and how much it is costing you.
Our staff is happy to help you with this calculation. If the cost is outside your comfort zone, you can reduce it by using less water.
For suggestions on water conservation, click here
The District provides a variety of bill payment options to make it as convenient as possible for customers.
Mail: Send in your check.
Phone: Pay by credit card (delinquent accounts only).
In Person: Pay by cash, check, credit or bank card with Visa or Mastercard logo at the District Office at 2107 Main St., Oakley, in the Raley’s shopping center.
At Your Bank: Arrange with your bank to make direct payments to us. (Please allow up to 10 business days for us to receive your payment)
In Advance: You may pay as many months in advance as you wish, and your credit will be reflected on each monthly statement.
Auto Withdrawl: Call us at (925) 625-3798 to set up Payment Auto Withdrawl from your bank account.